Until someone can prove to me their M&P or XD can stand being thrown from an airplane at very low altitude onto rough/dry terrain, thrown onto concrete from the rooftop of a house, shot and hit with a .22 pistol, immersed in salt water overnight, completely filled with sugar sand, and all while loaded and firing when the trigger is pulled the first time, I'm sticking with Glock.

Does this happen alot with your guns?

If i'm ever thrown out of an airplane at low altitude, i suspect the ability of my gun to fire wont matter... given that I'll have a few broken bones and possibly unable to move.

(BTW, i voted Glock. I prefer the size and ergonomics. Its ability to survive at the bottom of the pacific ocean is of much lesser concern, as i dont do much shooting at the bottom of the ocean.)

I like Glocks and carry one in my civilian life. But I'm not sure how relevant all the Glock torture tests are, especially for a gun carried by a civilian. Covering it in lint and not lubing it for six months is probably a more realistic test.

Hell, I bet my M4 and M9 would both break under that kind of silly abuse. Yet somehow they manage to work fine here in Afghanistan. Go figure.

I voted for Glock. For the factory support, ease to find accessories, and the fact that they are tested to the limits. Give the XD a few years, and I might change my reasoning there. But I still prefer the Glock to the XD i have fired.
If I was more familiar with the XD I might feel different too. But trying to not be partial without really good reasoning, I still vote Glock.

I would say the Glock over the others. I've owned/carried Glocks and I've also shot the others. Not taking anything away from the M&P and XD but, I'd rely on the Glock most.
As long as its reliable, accurate, and effective everytime its called, thats all the test I need.

XD gets the nod

I looked at the Glock and the XD, and chose the XD. Fit ,finish and grip safety got the nod. From the very first shot I knew I had made the right decision. I have two H&K USPc, and if I had to make a choice between the H&K or the XD, I couldn't! The USPc was $819 and the XD was $499, maybe that would be the only deciding factor.